Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Replay a remote debug session logfile for GDB. |
0fb0cc75 | 2 | Copyright (C) 1996, 1998, 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2008, |
4c38e0a4 | 3 | 2009, 2010 Free Software Foundation, Inc. |
c906108c SS |
4 | Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 20 | |
5c44784c | 21 | #include "config.h" |
c906108c | 22 | #include <stdio.h> |
68070c10 | 23 | #if HAVE_SYS_FILE_H |
c906108c | 24 | #include <sys/file.h> |
68070c10 PA |
25 | #endif |
26 | #if HAVE_SIGNAL_H | |
c906108c | 27 | #include <signal.h> |
68070c10 | 28 | #endif |
c906108c | 29 | #include <ctype.h> |
68070c10 | 30 | #if HAVE_FCNTL_H |
c906108c | 31 | #include <fcntl.h> |
68070c10 PA |
32 | #endif |
33 | #if HAVE_ERRNO_H | |
5c44784c | 34 | #include <errno.h> |
68070c10 | 35 | #endif |
82e0fd98 DB |
36 | #ifdef HAVE_STDLIB_H |
37 | #include <stdlib.h> | |
38 | #endif | |
0729219d DJ |
39 | #ifdef HAVE_STRING_H |
40 | #include <string.h> | |
41 | #endif | |
82e0fd98 DB |
42 | #ifdef HAVE_UNISTD_H |
43 | #include <unistd.h> | |
44 | #endif | |
b80864fb DJ |
45 | #ifdef HAVE_NETINET_IN_H |
46 | #include <netinet/in.h> | |
47 | #endif | |
48 | #ifdef HAVE_SYS_SOCKET_H | |
49 | #include <sys/socket.h> | |
50 | #endif | |
51 | #if HAVE_NETDB_H | |
52 | #include <netdb.h> | |
53 | #endif | |
54 | #if HAVE_NETINET_TCP_H | |
55 | #include <netinet/tcp.h> | |
56 | #endif | |
a778ab81 | 57 | #if HAVE_ALLOCA_H |
58 | #include <alloca.h> | |
59 | #endif | |
68070c10 PA |
60 | #if HAVE_MALLOC_H |
61 | #include <malloc.h> | |
62 | #endif | |
b80864fb | 63 | #if USE_WIN32API |
12ea4b69 | 64 | #include <winsock2.h> |
b80864fb | 65 | #endif |
c906108c | 66 | |
f450004a DJ |
67 | #ifndef HAVE_SOCKLEN_T |
68 | typedef int socklen_t; | |
69 | #endif | |
70 | ||
c906108c SS |
71 | /* Sort of a hack... */ |
72 | #define EOL (EOF - 1) | |
73 | ||
c16158bc JM |
74 | /* Version information, from version.c. */ |
75 | extern const char version[]; | |
76 | extern const char host_name[]; | |
77 | ||
c906108c SS |
78 | static int remote_desc; |
79 | ||
68070c10 PA |
80 | #ifdef __MINGW32CE__ |
81 | ||
82 | #ifndef COUNTOF | |
83 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
84 | #endif | |
85 | ||
86 | #define errno (GetLastError ()) | |
87 | ||
88 | char * | |
89 | strerror (DWORD error) | |
90 | { | |
91 | static char buf[1024]; | |
92 | WCHAR *msgbuf; | |
93 | DWORD lasterr = GetLastError (); | |
94 | DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM | |
95 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
96 | NULL, | |
97 | error, | |
98 | 0, /* Default language */ | |
99 | (LPVOID)&msgbuf, | |
100 | 0, | |
101 | NULL); | |
102 | if (chars != 0) | |
103 | { | |
104 | /* If there is an \r\n appended, zap it. */ | |
105 | if (chars >= 2 | |
106 | && msgbuf[chars - 2] == '\r' | |
107 | && msgbuf[chars - 1] == '\n') | |
108 | { | |
109 | chars -= 2; | |
110 | msgbuf[chars] = 0; | |
111 | } | |
112 | ||
113 | if (chars > ((COUNTOF (buf)) - 1)) | |
114 | { | |
115 | chars = COUNTOF (buf) - 1; | |
116 | msgbuf [chars] = 0; | |
117 | } | |
118 | ||
119 | wcstombs (buf, msgbuf, chars + 1); | |
120 | LocalFree (msgbuf); | |
121 | } | |
122 | else | |
123 | sprintf (buf, "unknown win32 error (%ld)", error); | |
124 | ||
125 | SetLastError (lasterr); | |
126 | return buf; | |
127 | } | |
128 | ||
129 | #endif /* __MINGW32CE__ */ | |
130 | ||
c906108c SS |
131 | /* Print the system error message for errno, and also mention STRING |
132 | as the file name for which the error was encountered. | |
133 | Then return to command level. */ | |
134 | ||
82e0fd98 | 135 | static void |
54363045 | 136 | perror_with_name (const char *string) |
c906108c | 137 | { |
5c44784c | 138 | #ifndef STDC_HEADERS |
c906108c | 139 | extern int errno; |
5c44784c JM |
140 | #endif |
141 | const char *err; | |
c906108c SS |
142 | char *combined; |
143 | ||
43d5792c DJ |
144 | err = strerror (errno); |
145 | if (err == NULL) | |
146 | err = "unknown error"; | |
147 | ||
c906108c SS |
148 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
149 | strcpy (combined, string); | |
150 | strcat (combined, ": "); | |
151 | strcat (combined, err); | |
152 | fprintf (stderr, "\n%s.\n", combined); | |
153 | fflush (stderr); | |
154 | exit (1); | |
155 | } | |
156 | ||
157 | static void | |
fba45db2 | 158 | sync_error (FILE *fp, char *desc, int expect, int got) |
c906108c SS |
159 | { |
160 | fprintf (stderr, "\n%s\n", desc); | |
161 | fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n", | |
162 | ftell (fp), expect, got); | |
163 | fflush (stderr); | |
164 | exit (1); | |
165 | } | |
166 | ||
e581f2b4 PA |
167 | static void |
168 | remote_error (const char *desc) | |
169 | { | |
170 | fprintf (stderr, "\n%s\n", desc); | |
171 | fflush (stderr); | |
172 | exit (1); | |
173 | } | |
174 | ||
82e0fd98 | 175 | static void |
fba45db2 | 176 | remote_close (void) |
c906108c | 177 | { |
b80864fb DJ |
178 | #ifdef USE_WIN32API |
179 | closesocket (remote_desc); | |
180 | #else | |
c906108c | 181 | close (remote_desc); |
b80864fb | 182 | #endif |
c906108c SS |
183 | } |
184 | ||
185 | /* Open a connection to a remote debugger. | |
186 | NAME is the filename used for communication. */ | |
187 | ||
82e0fd98 | 188 | static void |
fba45db2 | 189 | remote_open (char *name) |
c906108c | 190 | { |
c906108c SS |
191 | if (!strchr (name, ':')) |
192 | { | |
193 | fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name); | |
194 | fflush (stderr); | |
195 | exit (1); | |
196 | } | |
197 | else | |
198 | { | |
b80864fb DJ |
199 | #ifdef USE_WIN32API |
200 | static int winsock_initialized; | |
201 | #endif | |
c906108c SS |
202 | char *port_str; |
203 | int port; | |
204 | struct sockaddr_in sockaddr; | |
f450004a | 205 | socklen_t tmp; |
c906108c SS |
206 | int tmp_desc; |
207 | ||
208 | port_str = strchr (name, ':'); | |
209 | ||
210 | port = atoi (port_str + 1); | |
211 | ||
b80864fb DJ |
212 | #ifdef USE_WIN32API |
213 | if (!winsock_initialized) | |
214 | { | |
215 | WSADATA wsad; | |
216 | ||
217 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
218 | winsock_initialized = 1; | |
219 | } | |
220 | #endif | |
221 | ||
c906108c | 222 | tmp_desc = socket (PF_INET, SOCK_STREAM, 0); |
363a6e9f | 223 | if (tmp_desc == -1) |
c906108c SS |
224 | perror_with_name ("Can't open socket"); |
225 | ||
226 | /* Allow rapid reuse of this port. */ | |
227 | tmp = 1; | |
c5aa993b JM |
228 | setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, |
229 | sizeof (tmp)); | |
c906108c SS |
230 | |
231 | sockaddr.sin_family = PF_INET; | |
c5aa993b | 232 | sockaddr.sin_port = htons (port); |
c906108c SS |
233 | sockaddr.sin_addr.s_addr = INADDR_ANY; |
234 | ||
c5aa993b | 235 | if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) |
c906108c SS |
236 | || listen (tmp_desc, 1)) |
237 | perror_with_name ("Can't bind address"); | |
238 | ||
239 | tmp = sizeof (sockaddr); | |
c5aa993b | 240 | remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp); |
c906108c SS |
241 | if (remote_desc == -1) |
242 | perror_with_name ("Accept failed"); | |
243 | ||
c906108c SS |
244 | /* Enable TCP keep alive process. */ |
245 | tmp = 1; | |
c5aa993b | 246 | setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp)); |
c906108c SS |
247 | |
248 | /* Tell TCP not to delay small packets. This greatly speeds up | |
1b3f6016 | 249 | interactive response. */ |
c906108c | 250 | tmp = 1; |
373fe97f | 251 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, |
c5aa993b | 252 | (char *) &tmp, sizeof (tmp)); |
c906108c | 253 | |
b80864fb DJ |
254 | #ifndef USE_WIN32API |
255 | close (tmp_desc); /* No longer need this */ | |
256 | ||
c5aa993b JM |
257 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbreplay simply |
258 | exits when the remote side dies. */ | |
b80864fb DJ |
259 | #else |
260 | closesocket (tmp_desc); /* No longer need this */ | |
261 | #endif | |
c906108c SS |
262 | } |
263 | ||
b80864fb | 264 | #if defined(F_SETFL) && defined (FASYNC) |
c906108c | 265 | fcntl (remote_desc, F_SETFL, FASYNC); |
b80864fb | 266 | #endif |
c906108c SS |
267 | |
268 | fprintf (stderr, "Replay logfile using %s\n", name); | |
269 | fflush (stderr); | |
270 | } | |
271 | ||
c5aa993b | 272 | static int |
fba45db2 | 273 | tohex (int ch) |
c906108c SS |
274 | { |
275 | if (ch >= '0' && ch <= '9') | |
276 | { | |
277 | return (ch - '0'); | |
278 | } | |
279 | if (ch >= 'A' && ch <= 'F') | |
280 | { | |
281 | return (ch - 'A' + 10); | |
282 | } | |
283 | if (ch >= 'a' && ch <= 'f') | |
284 | { | |
285 | return (ch - 'a' + 10); | |
286 | } | |
287 | fprintf (stderr, "\nInvalid hex digit '%c'\n", ch); | |
288 | fflush (stderr); | |
289 | exit (1); | |
290 | } | |
291 | ||
292 | static int | |
fba45db2 | 293 | logchar (FILE *fp) |
c906108c SS |
294 | { |
295 | int ch; | |
296 | int ch2; | |
297 | ||
298 | ch = fgetc (fp); | |
299 | fputc (ch, stdout); | |
300 | fflush (stdout); | |
301 | switch (ch) | |
302 | { | |
303 | case '\n': | |
304 | ch = EOL; | |
305 | break; | |
306 | case '\\': | |
307 | ch = fgetc (fp); | |
308 | fputc (ch, stdout); | |
309 | fflush (stdout); | |
310 | switch (ch) | |
311 | { | |
c5aa993b JM |
312 | case '\\': |
313 | break; | |
314 | case 'b': | |
315 | ch = '\b'; | |
316 | break; | |
317 | case 'f': | |
318 | ch = '\f'; | |
319 | break; | |
320 | case 'n': | |
321 | ch = '\n'; | |
322 | break; | |
323 | case 'r': | |
324 | ch = '\r'; | |
325 | break; | |
326 | case 't': | |
327 | ch = '\t'; | |
328 | break; | |
329 | case 'v': | |
330 | ch = '\v'; | |
331 | break; | |
c906108c SS |
332 | case 'x': |
333 | ch2 = fgetc (fp); | |
334 | fputc (ch2, stdout); | |
335 | fflush (stdout); | |
336 | ch = tohex (ch2) << 4; | |
337 | ch2 = fgetc (fp); | |
338 | fputc (ch2, stdout); | |
339 | fflush (stdout); | |
340 | ch |= tohex (ch2); | |
341 | break; | |
342 | default: | |
343 | /* Treat any other char as just itself */ | |
344 | break; | |
345 | } | |
346 | default: | |
347 | break; | |
348 | } | |
349 | return (ch); | |
350 | } | |
351 | ||
e581f2b4 PA |
352 | static int |
353 | gdbchar (int desc) | |
354 | { | |
355 | unsigned char fromgdb; | |
356 | ||
357 | if (read (desc, &fromgdb, 1) != 1) | |
358 | return -1; | |
359 | else | |
360 | return fromgdb; | |
361 | } | |
362 | ||
c906108c SS |
363 | /* Accept input from gdb and match with chars from fp (after skipping one |
364 | blank) up until a \n is read from fp (which is not matched) */ | |
365 | ||
82e0fd98 | 366 | static void |
fba45db2 | 367 | expect (FILE *fp) |
c906108c SS |
368 | { |
369 | int fromlog; | |
e581f2b4 | 370 | int fromgdb; |
c906108c SS |
371 | |
372 | if ((fromlog = logchar (fp)) != ' ') | |
373 | { | |
374 | sync_error (fp, "Sync error during gdb read of leading blank", ' ', | |
375 | fromlog); | |
376 | } | |
377 | do | |
378 | { | |
379 | fromlog = logchar (fp); | |
380 | if (fromlog == EOL) | |
e581f2b4 PA |
381 | break; |
382 | fromgdb = gdbchar (remote_desc); | |
383 | if (fromgdb < 0) | |
384 | remote_error ("Error during read from gdb"); | |
c5aa993b JM |
385 | } |
386 | while (fromlog == fromgdb); | |
e581f2b4 | 387 | |
c906108c SS |
388 | if (fromlog != EOL) |
389 | { | |
e581f2b4 | 390 | sync_error (fp, "Sync error during read of gdb packet from log", fromlog, |
c906108c SS |
391 | fromgdb); |
392 | } | |
393 | } | |
394 | ||
395 | /* Play data back to gdb from fp (after skipping leading blank) up until a | |
396 | \n is read from fp (which is discarded and not sent to gdb). */ | |
397 | ||
82e0fd98 | 398 | static void |
fba45db2 | 399 | play (FILE *fp) |
c906108c SS |
400 | { |
401 | int fromlog; | |
402 | char ch; | |
403 | ||
404 | if ((fromlog = logchar (fp)) != ' ') | |
405 | { | |
406 | sync_error (fp, "Sync error skipping blank during write to gdb", ' ', | |
407 | fromlog); | |
408 | } | |
409 | while ((fromlog = logchar (fp)) != EOL) | |
410 | { | |
411 | ch = fromlog; | |
e581f2b4 PA |
412 | if (write (remote_desc, &ch, 1) != 1) |
413 | remote_error ("Error during write to gdb"); | |
c906108c SS |
414 | } |
415 | } | |
416 | ||
c16158bc JM |
417 | static void |
418 | gdbreplay_version (void) | |
419 | { | |
420 | printf ("GNU gdbreplay %s%s\n" | |
6e7ffa39 | 421 | "Copyright (C) 2010 Free Software Foundation, Inc.\n" |
90aa6a40 JM |
422 | "gdbreplay is free software, covered by the GNU General Public License.\n" |
423 | "This gdbreplay was configured as \"%s\"\n", | |
c16158bc JM |
424 | PKGVERSION, version, host_name); |
425 | } | |
426 | ||
427 | static void | |
428 | gdbreplay_usage (FILE *stream) | |
429 | { | |
430 | fprintf (stream, "Usage:\tgdbreplay <logfile> <host:port>\n"); | |
431 | if (REPORT_BUGS_TO[0] && stream == stdout) | |
432 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
433 | } | |
434 | ||
c906108c | 435 | int |
da85418c | 436 | main (int argc, char *argv[]) |
c906108c SS |
437 | { |
438 | FILE *fp; | |
439 | int ch; | |
440 | ||
c16158bc JM |
441 | if (argc >= 2 && strcmp (argv[1], "--version") == 0) |
442 | { | |
443 | gdbreplay_version (); | |
444 | exit (0); | |
445 | } | |
446 | if (argc >= 2 && strcmp (argv[1], "--help") == 0) | |
447 | { | |
448 | gdbreplay_usage (stdout); | |
449 | exit (0); | |
450 | } | |
451 | ||
c906108c SS |
452 | if (argc < 3) |
453 | { | |
c16158bc | 454 | gdbreplay_usage (stderr); |
c906108c SS |
455 | exit (1); |
456 | } | |
457 | fp = fopen (argv[1], "r"); | |
458 | if (fp == NULL) | |
459 | { | |
460 | perror_with_name (argv[1]); | |
c5aa993b | 461 | } |
c906108c SS |
462 | remote_open (argv[2]); |
463 | while ((ch = logchar (fp)) != EOF) | |
464 | { | |
465 | switch (ch) | |
466 | { | |
467 | case 'w': | |
468 | /* data sent from gdb to gdbreplay, accept and match it */ | |
469 | expect (fp); | |
470 | break; | |
471 | case 'r': | |
472 | /* data sent from gdbreplay to gdb, play it */ | |
473 | play (fp); | |
474 | break; | |
475 | case 'c': | |
476 | /* Command executed by gdb */ | |
477 | while ((ch = logchar (fp)) != EOL); | |
478 | break; | |
479 | } | |
480 | } | |
481 | remote_close (); | |
482 | exit (0); | |
483 | } |